Séminaire / Seminar GReCO |
| « Quantum singularity avoidance and Bianchi I clocks » |
|
Patrick Peter |
|
There are ways to cure the singularity problem in cosmology
by means of quantum effects. In the process, one encounters the question of time, which can for instance be addressed by using an internal degree of freedom. Applying such a method to an anisotropic Bianchi I model where the shear serves as a clock, we show that some generic features can be obtained for the trajectory of the average scale factor, all avoiding the singularity and reaching similar asymptotic states, deemed semi-classical. |
|
lundi 6 avril 2020 - 11:00 Webinaire Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |